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Taufik Hidayat
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Sistem Traksi Kereta Rel Listrik Dengan Teknologi VVVF Taufik Hidayat
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 11 No 1 (2012): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol11no1.333

Abstract

The electrical system of electric railcar with the variable voltage variable frequency (VVVE) technology has been equipped with different devices functioning to change the DC-link voltage from the overhead line in undesired conditions. It also transmits energy powered by the motor due to a braking process not able to be transmitted back to the overhead line, and keeps the DC-link voltage stable during the braking process. The inverter functions to change the DC-link voltage into a source of AC 3 phase whose voltage and frequency can be regulated. The voltage and frequency variables produced are used to power four induction motors. The rotation speed of the motor can be set as desired by regulating the voltage and frequency of the AC source. Another function is to transmit back the force generated by the motor during the braking to the overhead line.
Sistem Static Inverter Pada Kereta Rel Listrik HOLEC-BN Taufik Hidayat
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 9 No 1 (2010): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol9no1.345

Abstract

Static inverter (SIV) system in electric railcar Holec-BN with VVVF (variable voltage variable frequency) technology, change a nominal input voltage 1.500 VDC into output voltage 380 VAC, three phase, 50 Hz, and 110 VDC and 137 VDC. SIV serve voltage as a compressor system, ventilation, light lamps, drive/brake control, etc. Loads that SIV serve it can be stopped to operate in an emergency conditions. This helps a system or loads or system to maintain a working if one of SIV stopped and it is still operated if both SIV have fail. As mentioned above, Holec-BN electric railcar operate two units SIV on each trainset of electric railcar. A frequency of failure and damage of SIV in Holec-BN electric railcar classified a high. In order to reliability of this electric railcar can be maintained on reasonable level, there is need a improvement steps to prevent the failure and damage to continue. Higher reliability is need in order to avoidable the electric railcar also in high so that it have ability to meet a hope for public who use the service in order to obtain railway transportation with safe, secure, confortable, reliable, punctual, and so on.
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